This is a note to let you know that I've just added the patch titled
drm/amd/display: Do not clear GPINT register when releasing DMUB from reset
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-do-not-clear-gpint-register-when-rel.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 14c2d59247e9f3853770a18c336e1acf16ca0603
Author: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Date: Thu Apr 6 15:48:48 2023 -0400
drm/amd/display: Do not clear GPINT register when releasing DMUB from reset
[ Upstream commit 99d92eaca5d915763b240aae24669f5bf3227ecf ]
[Why & How]
There's no need to clear GPINT register for DMUB
when releasing it from reset. Fix that.
Fixes: ac2e555e0a7f ("drm/amd/display: Add DMCUB source files and changes for DCN32/321")
Reviewed-by: Leo Li <sunpeng.li@xxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
index b0adbf783aae9..9c20516be066c 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
@@ -137,7 +137,6 @@ void dmub_dcn32_reset(struct dmub_srv *dmub)
void dmub_dcn32_reset_release(struct dmub_srv *dmub)
{
- REG_WRITE(DMCUB_GPINT_DATAIN1, 0);
REG_UPDATE(MMHUBBUB_SOFT_RESET, DMUIF_SOFT_RESET, 0);
REG_WRITE(DMCUB_SCRATCH15, dmub->psp_version & 0x001100FF);
REG_UPDATE_2(DMCUB_CNTL, DMCUB_ENABLE, 1, DMCUB_TRACEPORT_EN, 1);
